Question

TIMS is an acronym for the Third International Mathematics and Science Study. Kumon promotes a method of studying mathematics that it claims develops mathematical ability Do data support this claim? In one particular question on th TIMS exam, a random sample of 400 non-Kumon students resulted in 73 getting the correct answer. For the same question, a random sample of 400 Kumon students resulted in 130 getting the correct answer.Perform the appropriate test to confirm or refute Kumon’s claims.

Please list ti-84 calculator functions as well.

Answer 1

Sol:

Ho:p1=p2

Ha:p1 >p2

p1 is proportion of Kumon students

p2 is proportion of non Kumon students

z=4.631

p=0.0000

p<0.05

Reject Ho

Accept Ha

Conclusion:

There is sufficient statistical evidence at 5% level of significance to support Kumon’s claims.